Dynamic Mechanical Behavior of Hierarchical Resin Honeycomb by 3D Printing

Abstract

In this paper, surface projection micron stereo-lithography technology (PμSL) by 3D printing was used to prepare two resin honeycomb materials with different levels, and the mechanical behavior of these materials was studied. The quasi-static compression experiment and the dynamic compression experiment were carried out on the samples using the in situ micro-compression testing machine and the Split Hopkinson bar (SHPB) experimental equipment. The stress–strain curves of these materials at different strain rates were obtained, and the energy absorption characteristic of materials with two different levels were analyzed. This article reveals that the collapse strength and energy absorption properties of the materials are related to the hierarchical level of honeycomb. Multi-level hierarchical honeycomb (MHH) has higher collapse strength and better energy absorption properties than single-level hierarchical honeycomb (SHH). It turned out that increasing the hierarchical level of honeycomb could improve the mechanical properties of the materials. In the future development of products, the mechanical properties of hierarchical material by 3D printing can be further optimized through changing the level of the fractal structure.

A novel approach to treat the Thiel-Behnke corneal dystrophy using 3D printed honeycomb-shaped polymethylmethacrylate (PMMA)/Vancomycin (VAN) scaffolds

“…In this study, the honeycomb geometry of the dystrophy was mimicked with a 3D printing process. Recently, with the rapid development of 3D printing technology, the design of complex three-dimensional spatial structures has become easier, and the preparation of porous composite materials with 3D printing technology has become appropriate [7]. PMMA was used as a matrix polymer, and it is generally used in additive surgery to treat both laser-assisted in situ keratomileusis and post-keratoconus corneal ectasia [8].…”

Experimental and Numerical Investigation of 3D Printing PLA Origami Tubes under Quasi-Static Uniaxial Compression

“…Due to light weight, excellent energy absorption, and low manufacturing costs, thin-walled tubes are widely used in vehicle engineering. Over the past few decades, a number of thin-walled tubes with different structures have been widely investigated, including corrugated tubes [ 3 ], folded tubes [ 4 ], grooved tubes [ 5 ], concave tubes [ 6 ], honeycomb structures [ 7 ], and lattice structures [ 8 ]. As one of the new types of thin-walled tubes [ 9 ], origami-based tubes have attracted considerable attention because they can be designed to guide the collapse following the pre-manufactured pattern and improve the energy absorption performance.…”

Compressive properties of cell structures manufactured by photo-curing technology liquid polymer resins – Polyjet Matrix

“…This is important especially in terms of saving materials while maintaining mechanical properties. The manufacture of cell structures may be based on the formation of hollow shells which may be like trusses or hexagonal structures with a changed angle of inclination of the arms [1]. Cell structures can also be made by alternating the use of hard and soft materials, which due to the photo-curing effect, will create one model from two materials [3][4][5].…”